title: A clinical protocol for intraoral digital impression of screw-retained CAD/CAM framework on multiple implants based on wavefront sampling technology.
abstract: OBJECTIVE
  To obtain an accurate CAD/CAM metal framework over 6 implants using a Chairside Intraoral Scanner based on the principle of active (optical) wavefront sampling.
  
  
  METHODS
  Six prototype cylindrical scan bodies screwed in the implants were used to obtain an intraoral digital impression. A conventional resin tooth try-in was fabricated and digitized with an extraoral scanner, and this dataset was merged to the digital data obtained from the intraoral impression to calculate the best framework design with advanced CAD software. The framework was fabricated with a 5-axis computer numerical control milling unit. Three clinical tests (saliva intrusion, Sheffield test, and screw resistance test) were performed to assess the fit of the framework.
  
  
  RESULTS
  Under 3 clinical tests, an accurate fit was observed.
  
  
  CONCLUSIONS
  The case presented in this report proposes a new clinical protocol for obtaining accurate digital impressions of multiple implants.
authors.affiliation: Bista Eder Private Practice, Clínica Dental Bista Eder, Eibar, Guipuzcoa, Spain.
authors.forename: Angel
authors.initials: A
authors.lastname: Moreno
authors.forename: Beatriz
authors.initials: B
authors.lastname: Giménez
authors.forename: Mutlu
authors.initials: M
authors.lastname: Özcan
authors.forename: Guillermo
authors.initials: G
authors.lastname: Pradíes
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D002985:Clinical Protocols; D017076:Computer-Aided Design; D059605:Dental Implant-Abutment Design; D015921:Dental Implants; D003761:Dental Impression Technique; D018772:Dental Marginal Adaptation; D003764:Dental Materials / Q000737:chemistry; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D003781:Denture Retention / Q000295:instrumentation; D003826:Denture, Complete, Lower; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D008875:Middle Aged; D010347:Patient Care Planning; D012984:Software; D014025:Titanium / Q000737:chemistry; D014584:User-Computer Interface; D014741:Video Recording / Q000379:methods
chemical_list: D000180:Acrylic Resins; D015921:Dental Implants; D003764:Dental Materials; D014025:Titanium